2XSC

Crystal structure of the cell-binding B oligomer of verotoxin-1 from E. coli

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7		12% PEG8000, 50 MM MOPS PH7.0

Crystal Properties
Matthews coefficient	Solvent content
2.23	45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.6	α = 90
b = 102.4	β = 90
c = 56.1	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	287	AREA DETECTOR	MULTIWIRE			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2.05	24.6	88.6				19617			21.59

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MIR	NONE	2.052	24.634	0.03	19617	1005	88.79	0.1448	0.1423	0.1917	23.3

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
-2.7744			-2.4198		5.1942

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	13.7
f_angle_d	0.948
f_chiral_restr	0.073
f_bond_d	0.01
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2700
Nucleic Acid Atoms
Solvent Atoms	145
Heterogen Atoms	3

Software

Software
Software Name	Purpose
PHENIX	refinement
MLPHARE	phasing